Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Tonya L Gray, MD

Individual provider Family Medicine Physician · NPI 1427164201

Tonya L Gray, MD is a Family Practice in Mason City, Iowa. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1998, 28 years ago. Practices with North Iowa Mercy Clinics, a 300-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
28
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
IA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1010 4th St SW
Mason City, IA 50401-2857
Phone: (641) 422-6020
Fax: (641) 422-7803
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 520 S Pierce Ave, Mason City, IA 50401-2749 — (844) 474-4321

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD-35644 (IA)

Record details

NPI number1427164201
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 22, 2006
Last updated in NPPESAugust 3, 2026
Certification dateAugust 3, 2026
Mailing address621 S Illinois Ave Ste 103, Mason City, IA 50401-5489

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice North Iowa Mercy Clinics — 300 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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